Allu

In Akkadian mythology the Allu were a race of monstrous and faceless demons that destroyed all what they could capture. They were engendered during a man's sleep with Lilitu or one of her demon servants (see also succubus). When the man who had engendered them was about to die, they surrounded his bed waiting for the moment during which they could take their father's soul, impeding his travel to the Underworld, and making of him an errant spirit, feared by all living people (see also ghost).

In Sumerian mythology Allu was a demonic power.